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arXiv · 1407.3847

Dual-axis, high data-rate atom interferometer via cold ensemble exchange

Akash V. Rakholia·Hayden J. McGuinness·Grant W. Biedermann
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Abstract

We demonstrate a dual-axis accelerometer and gyroscope atom interferometer, which forms the building blocks of a six-axis inertial measurement unit. By recapturing the atoms after the interferometer sequence, we maintain a large atom number at high data-rates of 50 to 100 measurements per second. Two cold ensembles are formed in trap zones located a few centimeters apart, and are launched toward one-another. During their ballistic trajectory, they are interrogated with a stimulated Raman sequence, detected, and recaptured in the opposing trap zone. We achieve sensitivities at $\mathrm{\mu \mathit{g} / \sqrt{Hz}}$ and $\mathrm{\mu rad / s / \sqrt{Hz}}$ levels, making this a compelling prospect for expanding the use of atom interferometer inertial sensors beyond benign laboratory environments.

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Akash V. Rakholia, Hayden J. McGuinness, Grant W. Biedermann. 2014-07-14. Dual-axis, high data-rate atom interferometer via cold ensemble exchange. https://arxiv.org/abs/1407.3847

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